The Downey mildew of bajra is caused by

The Downey mildew of bajra is caused by S. graminicola.
One of the most important diseases of pearl millet is downy mildew, also known as green ear, caused by the fungus Sclerospora graminicola.
The resting spores of the fungus in the soil constitute the primary source of inoculum. Once the infection is established on a plant, the fungus sporulates and the spores are dispersed to create secondary infections within the crop. The fungus is systemic and infects plants in all stages of development.